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5. J. MLLER. DYNAMO ELECTRIC MACHINE.

No. 258,864. Patented May 30, 1882".A

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HANS J. MLLER, OF NEWT YORK, N. Y., ASSIGNOR OF ONE-FOURTH TO ALEXANDER LEVETT, OF SAME PLAGE.

DYNAMo-ELECTRIC MACHINE.

SPECIFICATION forming part of Letters Patent No. 258,864, dated May 30, 1882.

Application filed October 13, 1879. Patented in England April 25, 1881, No. 1,787; in France April 26, 1881, No. 142,526; in Belgium April 2S, 1881, No. 54,501; in Canada May 31, 1881, No. 12,888; in Spain July 21, 1881, No. 1,539, and in Austria July 22, 1881,

To all whom tt may concern:

Be it known that I, HANS J. MLLER, a citizen of the United States, residing in New York city, in the State of New York, have invented an Improvement in Dynamo-Electric Machines, of which the following is a full, clear, and exact specification, reference being had to the drawings thereto annexed.

My invention is an improvement in the class ofdynamo-electric machines in which a series ot'coils or bobbins, constituting an armature-wheel, are arranged concentrically with an axis and rotate in a magnetictield-thatis to say, between the opposite poles of tield-of-ioree J magnets that are arranged in a circle and xed in position.

'Ihe object of my invention is to facilitate the separation ofthe armature-coils from the fixed electro-magnets, or, in other words, to enable them to be easily torn ofi' from the iield-otforce magnets. This object is attained by placing the several coils of the armature-wheel in an inclined position, as hereinafter more fully described, and shown in the accompany ing drawings, in which- Figure 1 is a central longitudinal vertical section, and Fig. 2 a transverse section, of a machine embodying my invention.

The electro-magnets A' to AG and B' to B'3 are attached respectively to standards O' and C2, resting on the horizontal base D, and are connected by braces E, that give the apparatus the requisite stiffness and rigidity. The two systems or series ot' magnets A', Ste., and B', 85e., are each arranged concentrically to the same imaginary axis, and each magnet in one series is placed in alignment with one of the other series, but separated therefrom a short distance to allow space for the armaturewheel to rotate between them.

The magnets are wound and connected with each other in the following manner: The wire A passes from the inner end otl magnet A' to the inner end of magnet A2, from the outer end of A2 to the outer end of A3, and so on, until it leaves the outer end ot' A6, whence it passes along the under side of the base-plate D to the outer end ot' B6. Then from the inner end of Bi it passes to the inner end of B5, and so on, until it leaves the magnet B' at the outer end and passes through the base-plate D, and is suitably connected with a bindingpost, or with operative parts that may be employed to adapt the machine for dili'erent kinds ot' work.

A shalt, H, is journaled in the standards C' and O2, and has a pulley, H', mounted fast on one end to provide for the application of a belt from a suitable motor. Adrum or wheel, I, of slightly less width than the space between the magnets A', Ste., and B, &c., is mounted on such shaft H and rotates therewith. This drum or wheel I carries the armature coils or bobbins J to J, inclusive, they heilig attached to its periphery. The wire j, that winds the coils J', J3, &c., passes from the outer edge of coil J' through aperture t' in the periphery ot' wheel I to the outer end ot' coil J3, from the inner end ofthe latter to the inner end of J5, from the outer end ot' J5 to the inner end of J7, and so on, from and to alternate coils. In the same manner a wire, k, passes from coil J2 to coils J4, J6 J12. These wires lead off to a suitable commutator, (not shown.) or to any other instrumentality by which the current is utilized. In place, however, of the cheeks or side plates of the coils J', Ste., being arranged radially to the axis ofthe circle, as usual heretofore, they are inclined backward or in the direction opposite to the direction of rotation of the wheel I. By this arrangement the coils J', Ste., may be carried past the opposing tield-of-t'orce magnets more easily or with a less expenditure of force. In other words, they tear off very easily from the fixed magnets A', &c., and B', duc.; and hence the motive force required to drive the wheel I is considerably economzed, and friction, wear, and expense of the motor are avoided to a corresponding extent.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

In a dynamo-electric machine, the combination, with opposite field-of-force magnets, of an armatnrewheel having its coils J', J2, Ste., placed in an inclined position to radii of said wheel, substantially as shown and described, for the purpose specilied.

HANS J. MLLER.

Witnesses OsCAR F. GUNZ, G. SEDeWIcK. 

